Improvement in harrows



U NITED. STATES PATENT QFFIGE.

DAVID L. JAQUES, OF HUDSON, MICHIGAN.

IMPROVEMENT m HARROWS.

Specification forming part of Letters Patent No. 137,926, dated April15, 1873; application filed J une 29, 1872.

To all whom it may concern:

Be it known that 1, DAVID L. JAQUES, of Hudson, in the county of Lenaweeand State of Michigan, have invented a new and valuable Improvement inHarrows; and I do hereby declare that the following is a full, clear,and exact description of the construction and operation of the same,reference being had to the annexed drawing making a part of thisspecification, and to the letters and figures of reference markedthereon.

Figure 1 of the drawing is a representation of a top view of myinvention. Fig. 2 is a sectional view in detail.

This invention has relation to harrows; and it consists in theconstruction and novel arrangement of the pivoted tooth -bars, and ofthe devices for adjusting the same; and it also consists in theconstruction and novel arrangement of the main frame of the barrow, allas hereinafter more fully described.

The barrow-frame is built in two triangular sections, with thelongitudinal bars A thereof hinged together. To these bars are securedthe oblique beams B, having each a semicircular socket, a, in its underside and another in its end to receive the round pivoted toothbars 0 O,which are supported in said sockets by means of metal straps d. Thepivoted ends of the toothed bars have their bearings in "the bars A,from which said toothed bars extend back obliquely, as shown. To thebars (J are attached the levers D, which are connected to staples of thebars 0 by means of arms E. By means of these levers the bars 0 C may beturned and the teeth a set to any angle desired. Curved racks F attachedto the bars B retain the levers at any point to which they may beadjusted, springs I) being used to press and hold the levers in theirappropriate notches when not under manipulation. The inner ends of thetooth-bars are rounded and enter recesses in the bars A. Pivot-bolts hsecured to the ends of said tooth-bars and furnished with enlarged headsh hold said ends in place. The heads of these pivots lie within angularrecesses j formed in the inner surfaces of the bars A and rest againstwashers t. To prevent the end of the tooth-bar from splitting a band ofmetal, 73, may be put around it.

What I claim as new is-= The harrow tooth-bar 0 provided at its forwardend with the swivel-bolt h, and furnished with an enlarged head, h,adapted to fit in a recess, j, formed in the bar A, substantially in themanner as set forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

DAVID L. J AQUES.

Witnesses:

L. R. PEIRsON, G. 0. WHITE.

